FAQs

A shed foundation being built by Site Preparations LLC
What is the process for getting a quote on my project?

We’ve tried to make the process as simple as possible:

  1. Submit your job details via our quote request form. You can also upload pictures of your site through this form, which speeds up the process and ensures the accuracy of your quote.
  2. Our estimators will put together a quote for your job and send it to you via email.
  3. When you’re happy with the quote, an initial deposit will secure your place in our job calendar. 

For more in-depth jobs (such as garage foundations or residential excavation work) we may also schedule an on-site visit to make sure we have all the necessary measurements and site details required for an accurate quote.
Simple jobs (such as most shed pads) can be quoted using only photos of your site.

What services do you offer?

We provide a variety of services related to site preparation for residential and commercial structures. These services include:

You can see all of our site preparation services here.

What is your service area?

Our service area for most of our site preparation services includes:

For some services, particularly our residential excavation services, we serve a radius of approximately 75 miles around Gap, PA.

Do you have examples of your completed work?

Yes! You can see examples of our site preparation work in our recent jobs portfolio. We have photos from 100s of past jobs so you can get a broad overview of the type of projects we do.

How long have you been in business?

Site Prep was founded in 2014 when we saw a need for consistent, high-quality foundations for the prefabricated shed industry. From there, we grew our services to include a wide range of site preparation work.

Over the years, God has blessed us with a great team and 1000s of wonderful customers who refer us to their friends and family. In fact, we were named to the 2021 Inc. 5000 list of the fastest-growing private companies in America!

You can learn more about us, our mission, and our team here.

How do I know that I can trust Site Prep?

Always check the reviews of any contractor before you hire them! You can read reviews on a contractor’s website (ours are here), but you should primarily trust reviews from third-party sites that the contractor does not control. You can find our Google reviews here and our Facebook reviews here.

We are fully insured and licensed to perform site preparation work. Our license number is PA118139.

What is the best way to contact Site Prep?

To request an estimate on a job, use our free quote form. This form goes straight to our estimators and they will get back to you promptly with a quote on your job.
For all other inquiries, you can use our contact form or call us at 717-799-7311.

What is the best foundation for a prefab shed?

Crushed stone (or “gravel”) shed foundations are the best all-around shed foundation option. While various shed foundation types are available, crushed stone foundations provide the best combination of affordability, durability, and ease of construction. In fact, many shed manufacturers now recommend or require a crushed stone base for their buildings, with some shed companies even making their warranties contingent upon it.

How much does a shed foundation cost?

It depends. Some of the main factors that influence shed foundation cost are:

  • Size – Larger foundations cost more in total, but also have a lower cost per square foot.
  • Slope – Prices increase based on the slope of the site as shed foundations on grades require additional preparation work. Our pricing is adjusted for slope as follows:
    • Less than 8” of slope = Base price
    • 8”-14” of slope = Base price + 20%
    • 14”-20” of slope = Base price + 30%
    • 20”-26” of slope = Base price + 40%
    • Over 26” of slope = Contact us for custom pricing.
  • Location – We charge a mileage-based fee to cover our crews’ time and expenses while traveling to shed foundation jobs.

You can request a price sheet with some sample shed foundation pricing here or learn about the factors that affect shed site prep cost here.

What is the process for installing a shed foundation?

The general steps for installing a gravel shed foundation are:

  1. We remove several inches of topsoil and make sure the ground beneath is well compacted.
  2. We build a perimeter of pressure-treated lumber around the foundation and stake it in place. This perimeter also serves to level the site if it is sloped.
  3. We add a construction-grade stabilization over the dirt to provide added durability and prevent weed growth.
  4. We add a minimum of 4” of crushed stone (known as ‘¾” clean stone’) and lock it in place using a power compactor.

Then we clean up our tools, get out of your way, and you’re ready for your new shed to be delivered!

Do you level the ground for my shed as well?

Yes! We provide all the materials and do all the grading work to prepare the site for your new shed. Basically, you just point out where the shed will go and we’ll take care of the rest!

Keep in mind that the slope of the site will affect the final cost due to the extra labor and materials required. Our crew will measure the slope when they arrive and make any necessary adjustments to the original quote before they begin work. Our pricing is adjusted for slope as follows:

  • Less than 8” of slope = Base price
  • 8”-14” of slope = Base price + 20%
  • 14”-20” of slope = Base price + 30%
  • 20”-26” of slope = Base price + 40%
  • Over 26” of slope = Contact us for custom pricing.

You can read a general overview of how to level the ground for a shed here.

Is concrete or crushed stone a better option for a shed foundation?

A crushed stone pad makes a better prefab shed foundation than a concrete pad for sheds with prebuilt wooden floors; concrete pads are recommended for garages or sheds without built-in floors.
For sheds with built-in floors, stone pads are better than concrete for the following reasons:

  • Price – A stone foundation costs roughly ⅓ of what a similar concrete pad would cost.
  • Ease of installation – A stone foundation can often be installed in several hours.
  • Better drainage – A stone pad keeps drains moisture away from the base of your shed more quickly; water tends to puddle on concrete pads.

You can read more about gravel vs concrete shed bases here.

Are gravel shed foundations and crushed stone shed foundations the same thing?

Yes, those terms can be used interchangeably. Our pads are built with crushed stone but are often referred to as “gravel” shed foundations, so we often refer to them that way as well.

Are your shed foundations actually built with gravel?

Not technically. Gravel actually refers to round river stone, which is not suitable for a foundation. Our shed foundations are built with crushed stone. Crushed stone is ideal for a shed foundation because its uneven shape allows it to be tightly compacted into a firm base, while still allowing water to drain away from the shed.
However, many people refer to crushed stone as “gravel”, so we often do too!

What size should my shed foundation be compared to my shed?

A gravel shed foundation should extend 12” past your shed in each direction. For example, a 10’x12’ shed would require a 12’x14’ gravel shed foundation. This article goes into more detail about why your gravel shed foundation should be larger than your shed.

If you’re going with a concrete pad and your shed doesn’t have a floor, the foundation should be the same dimensions as your shed.

Can I just install a shed on shed foundation blocks?

We don’t recommend installing your shed on blocks as this can create problems for your building down the road. Potential issues include: 

  • Floor joists are supported unevenly.
  • Possible settling over time.
  • Binding windows and doors.
  • Space for critters to get under the shed.

In fact, many shed companies now require that their buildings be placed on a gravel shed foundation in order for their warranty to stand.
This article explains why shed foundation blocks are a bad idea in more detail.

Can I build a shed foundation on uneven ground?

Absolutely! There are two primary ways of building a shed foundation on uneven ground: 

Alternatively, some types of sheds and other buildings can be supported with concrete piers built up from a slope, such as in this example.

How deep should a foundation be for a shed?

In general, 4” to 6” is a good depth range for a gravel shed foundation. Check with your local building department to make sure the foundation that you want to build meets local building requirements.

How much gravel is needed for a shed foundation?

Your shed foundation should be at least 4” deep and should extend 12” past your shed on each side (ie. a 12×14 foundation for a 10×12 shed).

The simple formula to calculate how much gravel you need for a shed foundation is:

Length(feet)*Width(feet)*Depth(feet)=Total cubic feet 

There are 27 cubic feet per cubic yard or approximately 21.6 cubic feet per ton of crushed stone (the two most common sales units). You can read more about how much gravel is needed for a shed foundation here.

Do you use woven fabric to prevent weeds?

Absolutely! Commercial grade woven fabric is standard on all our gravel shed foundations. We believe it provides a more stable base for your shed by separating the gravel from the dirt below. In addition, it also keeps pesky plants away from your building!

What kind of gravel do you use for a shed foundation?

We recommend ‘¾” clean’ stone and use it for all of our shed foundations. This stone is an excellent choice because it compacts tightly while still allowing great drainage around the shed.

Do you have any recommendations for my shed location?

Our crews can help you determine the best shed location when they arrive on-site before they start excavation. Ultimately, you’re the one who will be using the shed on a regular basis, so you should make the final call!

Here are a few considerations:

  • Usage – You’ll likely place the shed differently depending on whether it’s used for household storage, garden supplies, lawnmower storage, etc.
  • Lighting – If you want lots of natural light in the shed, keep it away from trees or taller buildings.
  • Local ordinances – Many towns and cities limit where a shed can be placed relative to property lines, roads, and existing structures. Be sure to check what your township requires.

You can read more about how to choose a shed location here.

Can’t I just build my shed foundation myself?

You certainly can and we know of many DIY enthusiasts who have done so. In fact, we created a detailed guide on how to build a shed foundation to help you. 🙂

If you decide it’s not a project you want to handle alone, you can always request a free quote to have your shed foundation installed professionally.

How do I know if I need a foundation for my shed?

Most sheds need foundations. Even if it’s not required for the shed manufacturer’s warranty, a properly installed foundation will increase the life of your shed. 

In general, you should always install a foundation for a shed that is larger than 8’x8’ or weighs more than 300 pounds (including contents). 

You can learn more about whether your shed needs a foundation here.

Are there shed foundation options besides gravel?

Yes, there are. However, we recommend gravel shed foundations due to their combination of affordability, durability, and ease of installation. 

In some cases, local ordinances may require that gravel shed foundations be modified with frost-proof footings such as shed foundation piers. For even more foundation types, check out our comparison of the top 13 shed foundation options here.

Should my shed have concrete footings?

It depends on what your township or municipality requires. In most cases, a gravel foundation is sufficient to support a prefabricated shed with a built-in floor. However, if your township requires it we can add concrete shed foundation piers to a gravel pad to create a foundation that drains well and meets local code requirements. You can see our complete guide to shed footings here.

How do I anchor my shed to the foundation?

We recommend following the shed anchoring requirements of your local municipality and/or your shed manufacturer.
If your shed foundation includes concrete shed piers, you can simply anchor the shed to the footings using metal brackets. For gravel foundations, we recommend using a stake-and-cable anchoring system, which can be installed after the foundation is constructed and the shed is delivered.

Don’t see your question?

Just ask us and we’ll get back to you as soon as possible!